Door-check.



Patented 0ct.11,1910.

G. SCHEME.-

DOOR OHBOK. AP-PLIGATIOII IILED DBO. 11, 1909.

UNITED STATES Pl-XTENT OFFICE.

CHARLES SCHENCK, OF CHICAGO, ILLINOIS, ASSIGNOR TO TRANSPORTATION APPLI- ANCE CORPORATION, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

DOOR-CHECK.

Specification of Letters Patent.

Patented Oct. 11, 1910.

Application filed December 11, 1909. Serial No. 532,662.

To all whom it may concern:

Be it known that 1, CHARLES SGHENCK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Door-Checks, of which the following is a specification.

The doors used in vestibules of street cars and in other similar locations are often made of a number of panels which fold together in such a manner that when the door is opened a lar e opening will be secured and the pan.- els will fold back into a comparatively small space. At the present time certain locking devices are used for maintaining the several panels of such a door firmly in alinement when the door is extended and closed. Such devices are generally in the form of a long rod extending entirely across the several panels, and provided with proper locking facilities for engaging each panel, or such of them as will secure them firmly to the looking rod. The rod is generally pivoted near its central portion, so that it may be rotated out of locking engagement with the several panels, but difiiculty is sometimes encountered in maintaining it securely in looking position.

The object of the invention is to provide a locking device for holding such panel doors, and es ecially those for use on car vestibules, secure y in alinement when once the panels have been extended for closing the opening.

The invention consists in the features of construction and combination of parts hereinafter described and claimed.

In the drawings, Figure 1 illustrates a side elevation of a paneled 'door, employing three panels and having this improved looking mechanism attached to its upper portion; Fig. 2, a cross sectional elevation, taken on line 1-4 of Fig. 1, looking in the direction of the arrows and showing by dotted lines the position which the locking bar assumes when rotated into non-locking position, and Fig. 3, a perspective of the improved locking mechanism as attached to the car body, and showing the locking member thrown into non-locking position.

The door comprises three panels, 5, 6, and 7, attached to the car body 8. The panel 7 is hinged to the car body by means of hinges, such as 9; the anels 6 and 7 bein connected by means of hinges, such as 10, located on the rear of the panels; and the panels 5 and 6 are connected by means of hinges, such as 11, located on the front of the panels. The upper end of the panel 6 is hung from a bar 12 by means of a hanger 13 provided with a carrying roller 14 which runs on the top of the bar 12.

In opening the door the portions of the panels 6 and 7 adjacent to the hinge 10 swing inwardly toward the observer, so that the'panel 7 may rotate with respect to the car body 8 on the hinge '9. The panel 5 at the same time is intended to be folded over against the panel 6 by rotating on the hinge 11. It will be seen that in the folding process, as the panels 6 and 7 are pulled inwardly, the hanger 13 must move in the direction of the arrows, and that eventually the roller 14 on the top of the bar 12 will have to pass well over to the right.

In'order to look all three panels securely, it is only necessary to lock the outer or left hand edge of the panel 5 to the body of the car, and to lock the portions of the panels 6 and 7 adjacent to the hinge 10 likewise to the body of the car. This invention is adapted to be applied in such a way as to lock the last named portions of the panels 6 and 7 to the car body.

The locking mechanism consists, essentially, of a bracket 15 suitably mounted to the body of the car, spanning the bar 12 and passageway necessary for the passage of the hanger 13 and the roller 14, as shown in Fig. 2. The bracket carries, at its lower end, a block 15 to which is pivoted a locking member 16, pivoted thereto at 17 in any suitable manner. The locking member is adapted to swing around into locking engagement with the upper portions of the panels 6 and 7, as shown in Figs. 1 and 2, so that when held in that position these panels cannot be moved inwardly toward the observer. The bar 12 acts as a stop for the locking member and determines its limit of movement for the lockin position.

A spring 19 is proper y connected to the locking member and to the car body, so that when the locking-member has been thrown into locking position the tendency of the spring will be to maintain the looking member in locking position, and so that when the locking member is thrown into non-locking position the tendency of the spring will be to hold the locking member in such position, as shown by dotted lines in Fig. 2.

In the preferred construction, the springis permanently attached to. a pin- Zfi at the;

locking member, and is locked: at its oppna site end to the car body, by means of a hook 21. When the locking member is rotated into non-locking position, the spring 19 will" swing outwardly away? fi-Om the car body,

thereby allowing free e oi the roller 14: beneath the bracket i Ev en ly. my nven on uscep ibl f app i ation o any simi ar do r pane s whi h t s. de ir d to. maietain in leakin positien, b t the design hown. i adapte primarily f r us Q11 t e pane e do car vestibules.

, Myloeking dev ce s. seen to. comp se ntia ly a eaking, mem e ad p d to be he d lack ng pesitiqn; bat the ock ng ment to'tbe ea bedyi leaking;

f nc i n. is. i tend d. to b p t mQ 0t'by h feree wh ll be exe te n the door by reason of a tension n the pring-bu rat er-by reason. Qf the manner in whieh t lorkingmemb -r s p vo e II claim 1.

l- 11 a deer check, a. brac etr at ac memb hi ged to th br cke and adap e e n r tated into positionte engage th @9923. a d

adepted to. remain in lacking engagement withthe door, when. said door xert pres? emgiei -sure against the locking member, and a anting attached: e t e, leaking member, an

3 dapted to maintain eekmgamemb 11 position to engage the door when the lockfng-member is thrown into locking position, and adapted to maintain the locking membee out of position for engagement with the door when it is thrown into non-locking pos ition, substantially as described.

2. In a door check, a bracket for attachment to the car body, a downwardly extending arm on the bracket, a pin secured to the 1 downwardly extending arm, a looking mem- -'ber on the pin, and adapted to rotate about the same, the locking member adapted to be rotated into position for engagin -the-do or, the in being loeated so. that the locking lmem er engages the door on dead center,- and a spring attached to the locking memher and adapted to. maintain'the same in "position to engage the door when the lockifng member is'thrown into locking position, and adapted to maintain the locking member out 'of position for engagement with the door when it is thrown into non-lockingposition, substantially as described.v CHARLES SCHENCK.

Witnesses:

i D. I. Dn gn,

EPHRAIM BANNING. 

